Positive LC-ESI Analysis of Anions Using Di-and Tri-Cationic Ion-Pair Reagents

• 作 者: MichaelYe[1]JunminHuang[2]DanielW.Armstrong[2]ReneeJ.Soukup-Hein[2]JeffreyW.Remsburg[2]PurnenduK.Dasgupta[2]ZacharyS.Breitbach[2]PriteshS.Sharma[2]TharangaPayagala[2]ErandaWanigasekara[2]
• 机 构: Supelco, Div.of Sigma-Aldrich, Bellefonte, PA 16823 USA
• 出 处: 第2届大连国际色谱学术报告会、第37届国际高效液相色谱及相关技术会议、第18届全国色谱学术报告会
• 发表日期: 2011年期

　　Anions are most commonly analyzed by ion chromatography, ion selective electrodes or flow injection analysis.These methods are easy to use, but lack of sensitivity or specificity for some analysis.Anions have also been detected by electrospray ionization (ESI) in the negative mode in combination with liquid chromatography (LC).Unfortunately negative ESI lacks the sensitivity seen in positive ESI due to corona discharge, signal instability from solvents and arcing.